einsteinium

E1I1N1S1T1E1I1N1I1U1M3
US/aɪnˈstaɪni.əm/

noun

A transuranic chemical element (symbol Es) with atomic number 99: a soft, silvery, paramagnetic metal.

Similar
EsEatomic number 99
OriginEnglish Einstein ← German Einstein ← Middle High German stein →
RareScrabble 13
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Meanings

nouneinsteinium (uncountable)
  1. uncountablechemistryA transuranic chemical element (symbol Es) with atomic number 99: a soft, silvery, paramagnetic metal.

    Einsteinium, the 99th element of the periodic table, was discovered in the fallout of the first hydrogen bomb, detonated by the United States in the Marshall Islands on November 1, 1952.

    2021 February 3, Becky Ferreira, “Scientists Just Studied a Dangerous Element Discovered in a 50s Nuke Test”, in VICE
    1. countablechemistryAn atom of this element.

Synonyms & antonyms

nouna radioactive transuranic element produced by bombarding plutonium with neutrons

Similar
EsEatomic number 99
Broader
metallic elementmetal
Also see
ees

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*ís?
  2. Proto-Indo-European*h₁óynos
  3. Proto-Germanic*ainaz
  4. Proto-West Germanic*ain
  5. Old High Germanein
  6. Middle High Germanein
  7. Germanein
  8. Germaneines
  9. Germaneins
  10. Germanein-
  11. Proto-Indo-European*steh₂-
  12. Proto-Indo-European*steyh₂-
  13. Proto-Indo-European*stóyh₂nos
  14. Proto-Germanic*stainaz
  15. Proto-West Germanic*stain
  16. Old High Germanstein
  17. Middle High Germanstein
  18. GermanStein
  19. Germanein
  20. GermanStein
  21. GermanEinstein
  22. EnglishEinstein
  23. Englisheinsteinium

From Einstein + -ium. Named after Albert Einstein.

Full word history & related roots →

Translations

Afrikaans einsteinium
  • einsteiniumelement with atomic number 99
Arabic أَيْنِشْتَيْنِيُوم
  • أَيْنِشْتَيْنِيُوم (ʔayništayniyūm)element with atomic number 99
Basque einstenioa
  • einstenioaelement with atomic number 99
Bulgarian айнща́йний
  • айнща́йний (ajnštájnij)element with atomic number 99
Catalan einsteini
  • einsteinielement with atomic number 99
Chinese Mandarin 锿
  • 锿 (āi)element with atomic number 99
Czech einsteinium
  • einsteiniumelement with atomic number 99
Danish einsteinium
  • einsteiniumelement with atomic number 99
Dutch einsteinium
  • einsteiniumelement with atomic number 99
Esperanto ejnŝtejnio
  • ejnŝtejnioelement with atomic number 99
Estonian einsteinium
  • einsteiniumelement with atomic number 99
Finnish einsteinium
  • einsteiniumelement with atomic number 99
French einsteinium
  • einsteiniumelement with atomic number 99
German Einsteinium
  • Einsteiniumelement with atomic number 99
Greek αϊνστάνιο
  • αϊνστάνιο (aïnstánio)element with atomic number 99
Hebrew אינשטייניום
  • אינשטייניום (aynshtayniyum)element with atomic number 99
Hungarian einsteinium
  • einsteiniumelement with atomic number 99
Icelandic einsteinín
  • einsteinínelement with atomic number 99
Irish éinstéiniam
  • éinstéiniamelement with atomic number 99
Italian einstenio
  • einstenioelement with atomic number 99
Japanese アインスタイニウム
  • アインスタイニウム (ainsutainiumu)element with atomic number 99
Korean 아인시타이늄, 아인슈타이늄
  • 아인시타이늄 (ainsitainyum)element with atomic number 99
  • 아인슈타이늄 (ainsyutainyum)element with atomic number 99
Latin einsteinium
  • einsteiniumelement with atomic number 99
Latvian einšteinijs
  • einšteinijselement with atomic number 99
Lithuanian einšteinis
  • einšteiniselement with atomic number 99
Malay einsteinium
  • einsteiniumelement with atomic number 99
Norwegian einsteinium
  • einsteiniumelement with atomic number 99
Polish einstein
  • einsteinelement with atomic number 99
Portuguese einstânio
  • einstânioelement with atomic number 99
Romanian einsteiniu
  • einsteiniuelement with atomic number 99
Russian эйнште́йний
  • эйнште́йний (ejnštéjnij)element with atomic number 99
Scottish Gaelic einstèiniam
  • einstèiniamelement with atomic number 99
Slovak einsteinium
  • einsteiniumelement with atomic number 99
Spanish einstenio
  • einstenioelement with atomic number 99
Swedish einsteinium
  • einsteiniumelement with atomic number 99
Tamil ஐன்ஸ்டீனியம்
  • ஐன்ஸ்டீனியம் (aiṉsṭīṉiyam)element with atomic number 99
Thai ไอน์สไตเนียม
  • ไอน์สไตเนียม (aai-sà-dtaai-nîiam)element with atomic number 99
Turkish aynştaynyum
  • aynştaynyumelement with atomic number 99
Ukrainian ейнште́йній, айншта́йній
  • ейнште́йній (ejnštéjnij)element with atomic number 99
  • айншта́йній (ajnštájnij)element with atomic number 99
Vietnamese ensteni
  • enstenielement with atomic number 99
Welsh einsteiniwm
  • einsteiniwmelement with atomic number 99
Cite this entry
APA

einsteinium. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/einsteinium

MLA

“einsteinium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/einsteinium. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “einsteinium,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/einsteinium.

Source: einsteinium on Wiktionary, CC BY-SA 4.0.